"1"^^ . . "52633" . "25310" . "Utilization of %22q(+)/q(-) = const.%22 DSC cycles for physical aging studies" . . "Utilization of %22q(+)/q(-) = const.%22 DSC cycles for physical aging studies" . "Svoboda, Roman" . "Utilization of %22q(+)/q(-) = const.%22 DSC cycles for physical aging studies"@en . "0014-3057" . . . . "Utilization of %22q(+)/q(-) = const.%22 DSC cycles for physical aging studies"@en . . . . "9"^^ . "10.1016/j.eurpolymj.2014.07.039" . "[80603C4ACD15]" . . "European Polymer Journal" . "The utilization of the constant ratio cyclic temperature history, where q(+)/q(-) = const., was examined with respect to physical aging studies. In particular, determination of the apparent activation energy of enthalpy relaxation from constant ratio (CR) cycles was discussed. A novel equation fully utilizing the advantages of CR cycles was derived - it is based on shift of temperature corresponding to the maximum of relaxation peak T-p with the applied heating rate: -Delta h(*)/R = din(q(+))/dT(p)(-1). The equation was extensively tested for all types of structural relaxation behavior; it was proven to be highly accurate and independent from most data-distortive effects. In addition, it was shown that the unique shape of CR cycles curves can be utilized for the identification of certain data-distortive effects - thermal lags, imprecise heating/cooling rates or incomplete achievement of a true glassy state during cooling. Correspondingly, corrections for these data-distortive effects can be applied to other physical aging measurements performed for the given glassy material and DSC instrument." . . "000343341100021" . "GB - Spojen\u00E9 kr\u00E1lovstv\u00ED Velk\u00E9 Brit\u00E1nie a Severn\u00EDho Irska" . "RIV/00216275:25310/14:39898152" . . . . "The utilization of the constant ratio cyclic temperature history, where q(+)/q(-) = const., was examined with respect to physical aging studies. In particular, determination of the apparent activation energy of enthalpy relaxation from constant ratio (CR) cycles was discussed. A novel equation fully utilizing the advantages of CR cycles was derived - it is based on shift of temperature corresponding to the maximum of relaxation peak T-p with the applied heating rate: -Delta h(*)/R = din(q(+))/dT(p)(-1). The equation was extensively tested for all types of structural relaxation behavior; it was proven to be highly accurate and independent from most data-distortive effects. In addition, it was shown that the unique shape of CR cycles curves can be utilized for the identification of certain data-distortive effects - thermal lags, imprecise heating/cooling rates or incomplete achievement of a true glassy state during cooling. Correspondingly, corrections for these data-distortive effects can be applied to other physical aging measurements performed for the given glassy material and DSC instrument."@en . "P(GAP106/11/1152)" . "RIV/00216275:25310/14:39898152!RIV15-GA0-25310___" . "59" . . "Enthalpy relaxation; Data-distortive effects; Activation energy; Glass transition"@en . . . "1"^^ . "October" .